Clean utilization of palm kernel shell: sustainable and naturally heteroatom-doped porous activated carbon for lithium–sulfur batteries


Lithium–sulfur batteries (LSBs) have received much concern as emerging high-power energy storage system. Nevertheless, the low conductivity of sulfur and polysulfide shuttle results in low rate capability and rapid capacity decay, which seriously limit its commercial application. Here, facile, sustainable and cost-effective strategy for preparing heteroatom-doped porous activated carbon (PAC) derived from biomass palm kernel shell (PKS) was developed for high-performance LSB applications. The presence of N, P and S heteroatoms with modification of the surface polarity brings about large amounts of active sites and improved adsorption property compared to those of common carbon materials. The PAC sample possesses desirable specific surface area (SSA) (2760 m2·g−1) as well as pore volume (1.6 cm3·g−1). Besides, the good electrical conductivity of PAC endows the material with excellent rate performance. The PAC-S electrode with a 60% of sulfur loading has a desirable first discharge capacity (1045 mAh·g1, 200 mA·g−1) with superb discharge capacity (869.8 mAh·g−1, 100th cycle) and cyclability (312.6 mAh·g−1, 800 mA·g−1, 1000th cycle), which can be mainly ascribed to its unique porous properties and the good conductivity of PAC.

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This study was financially supported by the National Natural Science Foundation of China (Nos. 21671170, 21673203, 21805136 and 21201010), the Natural Science Foundation of Jiangsu Province (No.BK20170999), Program for New Century Excellent Talents of the University in China (No.NCET-13-0645) and the Six Talent Plan (No.2015-XCL-030). We also acknowledge the Priority Academic Program Development of Jiangsu Higher Education Institutions and the technical support we received at the Testing Center of Yangzhou University.

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Correspondence to Huan Pang.

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Han, X., Guo, X., Xu, M. et al. Clean utilization of palm kernel shell: sustainable and naturally heteroatom-doped porous activated carbon for lithium–sulfur batteries. Rare Met. (2020).

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  • Palm kernel shell
  • Heteroatom doping
  • Porous activated carbon
  • Lithium–sulfur battery